Convert current Website to new look Joomla website (including online bookings)

Hi there, We have a current website ([login to view URL]) which has an online booking facility for our range of courses. We would like a new look website (Joomla preferable so we can learn to use the back-end). The job would include changing over current material and setting up of new online booking system ready for 2016. The flavour is 'health'.